I see UIElements in the list of experimental features and am very intrigued. I want to rewrite the currently created asset using UIElements, as UIElements allows to solve some problems that cannot be solved in any other way. But I do not see any documentation at the moment, except for a brief reference in the manual. Github repository is unavailable too. I intend to spend about half a year on asset development, and I would like to understand how likely it is that UIElements can become ready for this period. And what will happen to the old OnGUI with time?